Model: 2579A

Hexagon Castellated Plain Nut

Special Features:

0.031 in. Radius notch on all corners 0.375 in. Above bearing surface

Properties:

Thread Class
3b
Thread Direction
Right-hand
Counterbore Diameter
0.631 inches nut and 0.651 inches nut
Nut Style
Castellated, hexagon
Nut Height
Between 0.834 inches and 0.854 inches
Width Across Flats
Between 0.928 inches and 0.948 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
18
Thread Size
0.625 inches
Bearing Surface Type
Washer faced
Material
Steel comp 1144
Material Specification
Sae assn standard single material response
NSN
5310-00-275-6747
Part Number
2579A
Description
Nut,plain,castellated,hexagon
CAGE
11083

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.

Part 2579A NSN 5310-00-275-6747

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01854
FIIG:
A021A0
Concept No.:
1
App. Key:
AG
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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